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MP2145 5.5V, 6A, 1.2MHz Step-Down Converter QFN2
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pMPS MP2145 — step-down converter, 5.5V input, 6A output, 1.2 MHz, QFN2./p
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MP2145 5.5V, 6A, 1.2MHz Step-Down Converter QFN2
MPS MP2145 is a step-down converter that accepts up to 5.5 V input, delivers 6 A, switches at 1.2 MHz, supplied in a QFN2 package.
Key Specifications
| Part Number | MP2145 |
| Input Voltage | up to 5.5 V |
| Output Current | 6 A |
| Switching Frequency | 1.2 MHz |
| Quiescent Current | 40 uA |
| Topology | Step-Down Converter |
| Package | QFN2 |
| Ordering Codes | MP2145 |
Features
- Up to 6A Output Current
- Wide 2.8V-to-5.5V Operating Input Range
- 20mΩ and 12mΩ Internal Power MOSFETs
- 40µA Quiescent Current
- 1.2MHz Fixed Switching Frequency
- 100% Duty Cycle in Dropout
- 1% Feedback Accuracy
- External Mode Control
- External VCON Control
- Adjustable Output from 0.6V
Applications
- Storage (SSD, HDD)
- Portable Instruments
Design Notes
- The step-down topology needs an inductor and output capacitor sized for the ripple at the switching frequency, not just the DC load.
- Keep the input loop short — high di/dt at the switch node sets conducted EMI.
- Power switches are integrated, so the thermal path is the PCB copper under the pad.
- Package QFN2 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP2145?
–5.5 V input and 6 A output.
What switching frequency does the MP2145 run at?
1.2 MHz.
Which package is the MP2145 available in?
QFN2.
Shenzhen Gaorunxin Technology Co., Ltd
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